The whole food expiration date printed on food packaging is just a best guess. However, I know from personal experience when I was struggling financially, I had to eat expired food from food pantries. When you are financially struggling, you don't have much of a choice esp. when you have to rely on food panties for your food source.

Once, I accidentally ate yogurt with mold on it (I freaked out and posted about it). Diary with mold seems contradictory but it happens. I also ate moldy bread once or twice.

I won't eat moldy cottage cheese. Once I opened a package of frozen precut french fries and all were covered in ice, so that told me the bag had been improperly sealed so I threw out the entire bag.

I ate a partially green potato and thought I had solanine poisoning b/c I got sick afterward.
I hate it when you can't tell if a potato is green or not until its too late.